JPH02130499A - Sampling device of sand cushion - Google Patents
Sampling device of sand cushionInfo
- Publication number
- JPH02130499A JPH02130499A JP63283858A JP28385888A JPH02130499A JP H02130499 A JPH02130499 A JP H02130499A JP 63283858 A JP63283858 A JP 63283858A JP 28385888 A JP28385888 A JP 28385888A JP H02130499 A JPH02130499 A JP H02130499A
- Authority
- JP
- Japan
- Prior art keywords
- sand
- sand cushion
- sampling
- edge portion
- containment vessel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004576 sand Substances 0.000 title claims abstract description 64
- 238000005070 sampling Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- OOYGSFOGFJDDHP-KMCOLRRFSA-N kanamycin A sulfate Chemical group OS(O)(=O)=O.O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N OOYGSFOGFJDDHP-KMCOLRRFSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Sampling And Sample Adjustment (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、原子炉格納容器に配設されたサンドクッショ
ン部から砂を採取するためのサンドクッション部の採取
装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a sand cushion sampling device for collecting sand from a sand cushion disposed in a nuclear reactor containment vessel.
（従来の技術）
原子炉設備は、大別すると第３図に示すように燃料棒お
よび制御棒などの電子炉の心臓部を収納する原子炉圧力
容器１、原子炉圧力容器１および再循環設備などの原子
炉−次系設備を収納している原子炉格納容器２およびこ
れらを囲う原子炉建屋のコンクリート躯体３とから構成
されている。(Prior Art) Nuclear reactor equipment can be roughly divided into a reactor pressure vessel 1 that houses the heart of the electronic reactor such as fuel rods and control rods, a reactor pressure vessel 1, and recirculation equipment, as shown in Figure 3. The reactor containment vessel 2 houses the reactor-related equipment such as the reactor, and the concrete frame 3 of the reactor building surrounding the reactor containment vessel 2.
圧力容器１は、格納容器２内の支持壁４に設置され、そ
の支持壁４と格納容器２との間に、万一事故により原子
炉−次系から放射性物質がもれ出てもこれを外部に出さ
ないように閉じこめる圧力抑制室５を形成している。ま
たコンクリート躯体３はそれぞれコンクリート壁によっ
て多くの補助機器室６などが区画されており、この各室
と格納容器２との機器搬入口を栓７で閉じている。The pressure vessel 1 is installed on a support wall 4 within the containment vessel 2, and there is a space between the support wall 4 and the containment vessel 2 to prevent radioactive materials from leaking from the reactor subsystem due to an accident. A pressure suppression chamber 5 is formed in which the pressure is confined so as not to leak to the outside. Further, each concrete frame 3 is divided into many auxiliary equipment rooms 6 by concrete walls, and the equipment entrance between each of these rooms and the containment vessel 2 is closed with a plug 7.
格納容器２を収納しているコンクリート躯体３のうち、
格納容器２のフランジ部８に隣接した部分より上方を通
常原子炉ウェル９と称している。Of the concrete frame 3 that houses the containment vessel 2,
The portion above the portion of the containment vessel 2 adjacent to the flange portion 8 is usually referred to as a reactor well 9.
そしてコンクリート躯体３の上部に使用済燃料プール１
０および機器ピッド１１を作っている。And the spent fuel pool 1 is located on the top of the concrete frame 3.
0 and equipment pit 11 are being made.
次に、第３図のＡ部を拡大して示す第４図を参照して、
原子炉格納容器２のサンドクッション１２について説明
する。第４図において、鋼板で構成された原子炉格納容
器２の底部には、固定点として発生する各荷重に対応す
る応力を緩和させるために原子炉格納容器２の外周に砂
をつめた部分を設置しており、これをサンドクッション
１２と呼している。Next, referring to FIG. 4 which shows an enlarged view of part A in FIG. 3,
The sand cushion 12 of the reactor containment vessel 2 will be explained. In Fig. 4, the bottom of the reactor containment vessel 2, which is made of steel plates, has a part filled with sand around the outer periphery of the reactor containment vessel 2 to serve as a fixed point and to relieve stress corresponding to each load that occurs. This is called the sand cushion 12.
このサンドクッション１２には、通常は、乾燥した砂１
２ａがつめられており、湿気を帯びることはない。This sand cushion 12 usually includes dry sand 1
2a is packed and does not get damp.
また、万一水分が入ったとしても下部に水扱き用のドレ
ン管（図示せず）が設置されており、従って通常は、充
分乾燥した状態を保持している。Furthermore, even if moisture does get in, there is a drain pipe (not shown) installed at the bottom to handle the water, so it usually remains sufficiently dry.
（発明が解決しようとする課題）
以上の構成において、万一結露、配管破断等で水分が砂
にしみこみ、かつドレン管が閉塞し水が流れ出ることが
なくなった場合においては、砂は湿分を保持したままの
状態となる。(Problems to be Solved by the Invention) In the above configuration, if moisture seeps into the sand due to condensation or pipe breakage, and the drain pipe is blocked and water no longer flows out, the sand will absorb moisture. It will remain in the retained state.
このとき、この水分の成分、あるいは含有量により、サ
ンドクッションとの接触部の原子炉格納容器鋼板は、腐
食を起こす可能性がある。At this time, depending on the composition or content of this moisture, there is a possibility that the steel plate of the reactor containment vessel at the contact portion with the sand cushion may undergo corrosion.
また、原子炉格納容器の内部におけるナンドクツション
と同レベルの位置には、事故時に発生する蒸気を凝縮す
る為の水が貯蔵されており、万一原子炉格納容器鋼板外
面が腐食していた場合には、それを認知する方法がない
のが現状である。In addition, water is stored inside the reactor containment vessel at the same level as the Nandoction, and water is stored to condense the steam generated during an accident, so in the unlikely event that the outer surface of the reactor containment steel plate corroded At present, there is no way to recognize this situation.
本発明の目的は、前記課題を解決する為に、原子炉格納
容器のサンドクッション部の腐食の原因になるかもしれ
ないサンドクッション部の湿分に対して、砂が湿ってい
ないか、認知する為、砂を採取するサンドクッション部
の採取装置を提供することにある。In order to solve the above-mentioned problem, an object of the present invention is to detect whether the sand is moist or not, with respect to moisture in the sand cushion part of the reactor containment vessel, which may cause corrosion of the sand cushion part. Therefore, it is an object of the present invention to provide a sampling device for a sand cushion section that collects sand.
（課題を解決するための手段）
上記目的を達成するために、本発明においては、錐形状
でかつ砂かきを有する先端部を有し、この先端部近傍に
遠隔にて開閉操作ができる器を有し原子炉格納容器に配
設されたサンドクッション部から砂を採取する採取口を
形成して成ること特徴とするサンドクッション部の採取
装置を提供する。(Means for Solving the Problems) In order to achieve the above object, the present invention has a cone-shaped tip with a sand shovel, and a device that can be remotely opened and closed near the tip. A sampling device for a sand cushion part is provided, characterized in that it has a sampling port for collecting sand from a sand cushion part disposed in a nuclear reactor containment vessel.
（作 用）
このように構成されたリーントクッション部の採取装置
においては、原子炉格納容器に配設されたサンドクッシ
ョン部の上から錐形状でかつ砂かきを有する先端部を回
転させながら所定の位置まで掘り込む、その後、採取口
の蓋を開動作させてサンドクッションの砂を採取し、引
き上げる。よって、所望の位置のサンドクッションの砂
を採取し、湿分を検査することができる。(Function) In the lean cushion collecting device configured as described above, a cone-shaped tip with a sand scraper is rotated from above the sand cushion provided in the reactor containment vessel to a predetermined position. Dig to the position of , then open the collection port lid to collect the sand from the sand cushion and pull it up. Therefore, it is possible to sample sand from a sand cushion at a desired position and test the moisture content.
（実施例）
以下本発明の一実施例に係るサンドクッション部の採取
装置の構成及び使用状態を第１図及び第２図を参照して
説明する。(Example) The configuration and usage state of a sand cushion part collecting device according to an example of the present invention will be described below with reference to FIGS. 1 and 2.
第１図（０，υは、本発明のサンドクッション部の採取
装置の構成図である。FIG. 1 (0, υ is a configuration diagram of a sand cushion part sampling device of the present invention.
装置本体１３は、砂中深く装置を掘り込む時、砂の抵抗
を受けにくい様に円筒形をしており、筒中に採取した砂
を貯ねえるように構成されている。The device main body 13 has a cylindrical shape so as to be less susceptible to sand resistance when digging the device deep into the sand, and is configured to store collected sand in the cylinder.
この先端部１４は、砂を掘り易い様に円相形状をしてお
り、かつ、砂かき１５を有している。This tip part 14 has a circular shape so as to easily dig sand, and has a sand shovel 15.
本体１３の円筒側面には、ガイド２０にて支持された蓋
１６付の採取口１７が設（プられており、この蓋１６は
、ガイド２１を介してロッド１８で上部迄連結されてい
る。また、本体１３の上部には、装置を砂にめり込ませ
る為のハンドル１９が設置される。A sampling port 17 with a lid 16 supported by a guide 20 is provided on the cylindrical side surface of the main body 13, and the lid 16 is connected to the top by a rod 18 via a guide 21. Furthermore, a handle 19 is installed on the top of the main body 13 for sinking the device into sand.
第２図は、上述した装置本体１３が実際、原子炉格納容
器２の底部のサンドクッション部１２に掘り込んで砂を
採取している状態を示している。FIG. 2 shows a state in which the device main body 13 described above is actually digging into the sand cushion portion 12 at the bottom of the reactor containment vessel 2 to collect sand.
尚、以下に本採取装置を用いての砂の採取方法を示す。The method for collecting sand using this sampling device is shown below.
まず、装置本体１３の先端部１４を下にして、サンドク
ッション１２の上端に垂直に立て、ハンドル１９を回転
させるとともに、下向きの力を加える。この動作により
、砂中深く、ザンプリング点まで装置が堀り込まれる。First, the device main body 13 is placed vertically on the upper end of the sand cushion 12 with the tip 14 facing down, and the handle 19 is rotated while applying downward force. This action burrows the device deep into the sand to the point of zampling.
ここで、ロッド１８を上方向に引上げることにより、蓋
１６が開き、砂１２ａが本体１３の中に流れ込む。Here, by pulling up the rod 18, the lid 16 opens and the sand 12a flows into the main body 13.
砂１２ａを本体１３内に貯え終わると、ロッド１８を下
方向に戻すことにより蓋１６が閉じられる。その後ハン
ドル１９を回転させるとともに上向きの力を加えること
により、装置本体１をサンドクッション１２の上端迄引
上げ、砂の採取を終了する。When the sand 12a has been stored in the main body 13, the lid 16 is closed by returning the rod 18 downward. Thereafter, by rotating the handle 19 and applying an upward force, the device main body 1 is pulled up to the upper end of the sand cushion 12, and the sand collection is completed.
（発明の効果〕
以上の様に、本発明の一実施例に係るサンドクッション
部の採取装置により、原子炉格納容器のサンドクッショ
ン部の砂の採取が可能となり、砂が湿っていないか認知
できる。(Effects of the Invention) As described above, the sand cushion part sampling device according to an embodiment of the present invention makes it possible to collect sand from the sand cushion part of the reactor containment vessel, and it is possible to recognize whether the sand is wet or not. .
ひいては、このサンプリング検査結果により、原子炉格
納容器サンドクッション部、鋼板外面が腐食しているか
どうか判断でき、健全性を確保することができる。Furthermore, based on the sampling inspection results, it is possible to determine whether the sand cushion portion of the reactor containment vessel and the outer surface of the steel plate are corroded, thereby ensuring the integrity of the reactor containment vessel.
第１図（２）は本発明の一実施例に係るサンドクッショ
ン部の採取装置の側面図、第１図（ハ）は第１図に）の
８−Ｂ矢視断面図、第２図は本発明の装置を使用した状
態を示す説明図、第３図は本発明を適用する原子炉建屋
を示す縦断面図、第４図は第３図のＡ部拡大図でおる。
２・・・原子炉格納容器
１２・・・サンドクッション
１３・・・装置本体
１４・・・先端部
１５・・・砂かき
１６・・・蓋
１７・・・採取口
代理人 弁理士 則 近 憲 佑
同 第子丸 叶
第
図
第
図
第
図FIG. 1(2) is a side view of a sand cushion collecting device according to an embodiment of the present invention, FIG. FIG. 3 is a longitudinal sectional view showing a nuclear reactor building to which the present invention is applied, and FIG. 4 is an enlarged view of section A in FIG. 3. 2...Reactor containment vessel 12...Sand cushion 13...Device body 14...Tip 15...Sand shovel 16...Lid 17...Sampling port agent Patent attorney Nori Chika Yudo Daishimaru Kano diagram diagram diagram
Claims (1)
近傍に遠隔にて開閉操作ができる蓋を有し原子炉格納容
器に配設されたサンドクッション部から砂を採取する採
取口を形成して成ることを特徴とするサンドクッション
部の採取装置。It has a cone-shaped tip with a sand shovel, a lid near the tip that can be opened and closed remotely, and a sampling port for collecting sand from the sand cushion provided in the reactor containment vessel. A collecting device for a sand cushion portion, characterized in that it is formed by forming a sand cushion portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63283858A JPH02130499A (en) | 1988-11-11 | 1988-11-11 | Sampling device of sand cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63283858A JPH02130499A (en) | 1988-11-11 | 1988-11-11 | Sampling device of sand cushion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02130499A true JPH02130499A (en) | 1990-05-18 |
Family
ID=17671081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63283858A Pending JPH02130499A (en) | 1988-11-11 | 1988-11-11 | Sampling device of sand cushion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02130499A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5214457A (en) * | 1990-05-31 | 1993-05-25 | Victor Company Of Japan, Ltd. | Reflective overhead projector with light-to-light converter |
| JP2008241604A (en) * | 2007-03-28 | 2008-10-09 | Ihi Corp | Sand sampling device |
-
1988
- 1988-11-11 JP JP63283858A patent/JPH02130499A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5214457A (en) * | 1990-05-31 | 1993-05-25 | Victor Company Of Japan, Ltd. | Reflective overhead projector with light-to-light converter |
| JP2008241604A (en) * | 2007-03-28 | 2008-10-09 | Ihi Corp | Sand sampling device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0127612B1 (en) | Procedure for permanently storing radioactive material | |
| JPH02287198A (en) | Bolt apparatus for radioactive waste disposal and waste disposal method | |
| JPH02130499A (en) | Sampling device of sand cushion | |
| CN107941557A (en) | A kind of column shaped deposit layered sampling device | |
| US5269172A (en) | Processes and apparatus for the prevention, detection and/or repair of leaks or avenues for leaks from above-ground storage tanks | |
| JPH0127400B2 (en) | ||
| CN108519255A (en) | A kind of detection method for acquiring radon consistence in soil | |
| JPH0114371B2 (en) | ||
| JP2511931B2 (en) | Structure of containment vessel | |
| JPS6228700A (en) | Sealing facility for radioactive waste having double structure | |
| JP2001305267A (en) | Testing method for nuclear reactor containment vessel | |
| CN113109547A (en) | Testing device and testing method for accelerating slope model saturation | |
| JPS6149452B2 (en) | ||
| JP2896620B2 (en) | Floor panel for underground structures | |
| JPS59185219A (en) | Sampling method of soil specimen and device therefor | |
| CN217856900U (en) | Rainwater recycling device in artificial simulation rainfall system | |
| KR102458248B1 (en) | Construction method of buffer material at field | |
| CN215669688U (en) | Nuclear waste storage well cover plate and storage well | |
| CN108106888A (en) | A kind of SOIL GAS harvester for high-precision geochemical | |
| JPS62130398A (en) | Storage trench for radioactive waste | |
| JPS6227866Y2 (en) | ||
| JPS60162991A (en) | Pressure-resisting testing method of housing vessel for reactor | |
| JPH0875894A (en) | Burnup of spent fuel measuring facility | |
| JPH09113676A (en) | Equipment temporary pool | |
| JPS62161098A (en) | Re-extracting method of sealed facility |